Slabs - Bs standards

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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danjoe
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Joined: Mon Jan 12, 2009 12:59 pm
Location: Taunton

Post: # 33905Post danjoe

What are the limitations for variance in height on neighbouring slabs when installed as a paved area, i am receiving conflicting information on this. ???
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lutonlagerlout
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Location: bedfordshire

Post: # 33908Post lutonlagerlout

anything over 5mm constitutes a trip hazard,depends on the flags obviously but if you are laying smooth flags the edges want to be more or less < 2mm flush
with some indian stone 5 mm is more like it due to the riven nature of the stone
regards LLL
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Tony McC
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Location: Warrington, People's Republic of South Lancashire
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Post: # 33927Post Tony McC

BS7533:4 Table B2 states the the "difference in levels at the joint of adjacent paving units" should not exceed 2mm, except when laying riven units.
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